PROBLEM TO BE SOLVED: To provide a radar device capable of displaying movement information of a tracking target of the same content in all ranges even when images obtained from signals different in pulse width are simultaneously displayed on the same screen; and a radar image display method. SOLUTION: This radar device is characterized by including: an echo data generation part for receiving two or more signals different in pulse width transmitted in a predetermined transmission pattern, and generating displaying echo data corresponding to a detection range on the basis of received echo signals of the same transmission pulse width; an ARPA processing part for generating movement information of one tracking target overlapping the displaying echo data by using the echo signals different in transmission pulse width; a display output synthesis part for superposing the movement information of the tracking target generated by the ARPA processing part on the displaying echo data; and a display part for displaying the image superposed in the display output synthesis part. COPYRIGHT: (C)2008,JPO&INPIT